| 摘要 |
PROBLEM TO BE SOLVED: To shorten the term of construction by hanging the combined truss beams from bridge piers, installing the execution equipment on truss top chords, mounting a form on the top chords, applying the concrete, and then hanging the beam to the next span. SOLUTION: The combined truss beams are hung between two spans from a bridge pier, execution equipment 13 is installed on a top chord 3 of the beam and a moving form 10 is installed on a bottom chord 4. Then the concrete is applied to the bottom chord 4 position to construct the bottom concrete floor board, and a moving crane 12 is installed on the execution equipment 13. Then the beam of a next span is hung by the crane 12, the execution equipment 13 is installed on the top chord 3 of the beam, and the crane 12 is moved onto the same. Then the beam of one span is hung by the crane 12, a form 10 is installed on a rear top chord 3, the concrete is applied to the top and bottom chords 3, 4 to construct the top concrete floor board 1 and the bottom concrete floor board. Further the hanging of the beam and the application of the concrete are repeated, and the beam is connected to a beam extended from an opposite bridge pier, Whereby the term of construction can be shortened.
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